[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Xen-users] Can a Domain be removed from a CPU before the VCPU quantum is used up?

  • To: xen-users@xxxxxxxxxxxxxxxxxxx
  • From: Henry Pepper <henrypepr@xxxxxxxxx>
  • Date: Mon, 15 Nov 2010 10:25:28 +0100
  • Delivery-date: Mon, 15 Nov 2010 01:28:58 -0800
  • Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:content-type; b=Qff+7nzILZxUa9BWQBzOn/fFAZ0s8+qOyWl+CU1eMyf+siWFFQOow2hKr2QwOztN2L lwxfC0U+CL2zkJeE4x5y0bAO3dKzWUvMPd+mfLsg9Y8vnc/wlrbM+8H8SWUf7laA3Agb ayHesWBfxIS21z08KDiuSJKT+8YBGx4IV3LoI=
  • List-id: Xen user discussion <xen-users.lists.xensource.com>


I've been reading about the Xen Credit scheduler, and I seem to get
the impression that a VCPU can be removed from the CPU before the
VCPUs time quantum is up.
  Is that correctly understood?
  If so what could cause a VCPU to be removed from the CPU?

How will the Xen scheduler get identify that a VCPU isn't doing anything?
  Is that when the VCPU is doing nothing, except waiting for timer interrupt(s)?

I appreciate any input or hints that anyone might have on this.



Xen-users mailing list



Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.